Version 3.0 available

Details

Today I released version 3.0 of the rSAP app. It is a complete redesign of the app, it is now prepared for the coming Android Nougat. I already ran it successfully on a Nexus 5X with the Nougat pre-release. Big changes were made in the user interface. I removed all outdated options and tried to better show error conditions. I also removed the SIM check, I will add this again when I find the time.